JPS59112076A - Production of fusible core cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a fused interlining that has firmness and elasticity, is soft to the touch, and is free from delamination.

Previously, an attempt was made to apply thermoplastic resin powder to tricot fabric and use it as an interlining material, as disclosed in Japanese Utility Model Publication No. 56-82489.

However, interlining fabrics using such tricot fabrics are difficult to handle because the fabric itself is too soft and the periphery curls, resulting in extremely unstable shapes.

Therefore, the inventors of the present invention proposed a fused interlining in which a nonwoven fabric and a nonwoven fabric were integrated, and the texture and resin seepage were improved.

However, as outer materials such as polyester and cotton become thinner and softer, there is a demand for interlining materials that are firmer, stiffer, and softer.

Generally speaking, the amount of binder can be reduced to meet the demand for soft materials, but there is a drawback that peeling occurs between the layers of 2y) and the nonwoven fabric.

The inventors of the present invention conducted various studies in view of these points, and as a result, discovered an excellent method for producing a fused interlining. In other words,
The present invention involves a process of layering knit and fiber web, impregnating them with a small amount of binder, and heat-treating them to combine them (hereinafter referred to as the "composite process"), and applying an adhesive from the fiber web side in a discontinuous pattern. A process of coating and heat-treating to create a base fabric (hereinafter referred to as "base fabric forming process"), and a process of applying heat-fusible resin in the form of discontinuous dots on at least one side of the base fabric (hereinafter referred to as "resin forming process"). This is a method for producing a fused interlining comprising:

In the present invention, "2" and "to" are knitted by looping yarn, and depending on the direction of the loop, there are warp knitting and weft knitting, and both can be used, but warp knitting like tricot is knitted in the width direction. It is more preferable because of its high elongation.

The fibrous web in the present invention generally refers to natural, synthetic, or semi-synthetic fibers with a fiber length of about 20 to 100 fl, or a blend of these fibers, which is formed by known web forming methods such as carding method and -C-array method. It refers to something created by law.

In the present invention, these two fiber webs are superimposed, and a binder is applied by impregnating and coating them to form a base fabric.

Binders used here include synthetic resin emulsions such as acrylate resins and ethylene-vinyl acetate resins, and latexes such as synthetic rubbers such as styrene-butadiene rubbers and acrylonitrile-butadiene rubbers.

Note that the compositions of the binder in the composite step and the adhesive in the base forming step may be different, but it goes without saying that they may be the same as long as the properties are not affected.

In the present invention, the weight of the knit is approximately io to 2(1'β
is preferred, and the weight of the fibrous web is preferably 3 to 15 f/d. If the weight of the fibrous web is less than 8 f/rd, there will be no combined effect with the second and third weights, and if it exceeds 15 f//d, it will be difficult to obtain a sufficiently soft feel. Further, even if the adhesive is applied from the fiber web side in the base fabric forming process, it is difficult to sufficiently prevent the adhesive from peeling off because the binder is difficult to sufficiently reach the second and top surfaces.

In the present invention, the amount of binder in the composite step is sufficient to composite the fiber web with the fiber web, and the amount of binder used in the composite process is sufficient to composite The amount is preferably about 1 to 51β, since it is sufficient that the amount does not peel off.

If this amount is less than 11, it is difficult to obtain a compounding effect, and 5g
If β is exceeded, the texture tends to become hard.

In this way, a small amount of binder is impregnated in the composite process,
Heat treatment such as drying and crosslinking is performed.

The adhesive used in the base fabric forming process must be applied from the fibrous web side, otherwise peeling will occur, which is not preferable. In other words, if the adhesive is applied from the knit side, since the fibers that make up the knit are thicker, almost no adhesive will be applied to the contact surface between the second and the fiber web.

In the present invention, the adhesive is applied in a discontinuous pattern, etc., but it is printed in dots, lines, patterns, etc. by ordinary engraving rolls or screen printing, and is fixed by heat treatment. An appropriate amount is determined according to the weight of the fiber web so as not to impair the texture, but the amount that does not impair the texture is 4 to 1.
Approximately 2 f/7fd is preferable.

In the next resin application step, a heat-fusible resin is applied to at least one side of the thus obtained refined base fabric.

This heat-fusible resin may be one that can be melted and bonded to the fabric by heating at approximately 100 to 150°C using an iron or press, such as polyamide resin, polyester resin, polyethylene resin, etc. Various synthetic resins are used.

If the heat-fusible resin is in powder form, it can be sprinkled, if it is in the form of a paste containing an emulsion, it can be applied in the shape of dots, or if it is in the form of melt-spun fibers, it can be placed directly on the base fabric. It can be applied by transferring it from a release paper onto a base fabric. Such a heat-fusible resin is applied to at least one side of the base fabric at a rate of about 10 to 20 f/nd.
However, it is more preferable to apply this heat-fusible resin to the fibrous web side of the base fabric, since no resin oozes out when bonded to the outer fabric.

Moreover, it goes without saying that if it is applied to both sides of the base fabric, it is useful as a double-sided bonding interlining between two fabrics.

As described above, the fused interlining of the present invention produced by the manufacturing method consisting of the composite process, the base fabric forming process, and the resin application process has tension and elasticity,
In addition, the texture was soft, there was no peeling between the eyebrows, and it was soaked like never before.

The inventors further expanded the soft fused interlining obtained in this way by 20 to 180% in the width direction, and then restored it to its original width, making the stone and texture even softer. Ta. Moreover, even immediately after the process of forming the base fabric, the base fabric is expanded by 20 to 180% in the width direction as described above, and after the base fabric is almost restored to its original width, at least one side of the base fabric has heat-sealable properties. When resin was applied, a fused interlining with a softer feel was similarly obtained.

This is because if the second part of the composite process and the fiber web are impregnated with a small amount of binder, some of the binder will also stick between the knits, making it less flexible than the original second part. However, the expansion process destroys the bonding agent between the knits.
I thought about it.

In addition, in the fabric forming process, the fibrous web and knit are partially fixed by adhesive applied in a discontinuous pattern, but the expansion process does not destroy the bond between the knit and the fibrous web. It is thought that. Therefore, either the base fabric or the fused interlining should be increased by 20 to 180% in the width direction.
If the expansion treatment is performed, the binder adhering between the knits will be destroyed, but the adhesion between the knits and the fiber web will not be destroyed, so it is thought that a softer texture can be obtained.

The present inventors tried to obtain a cyclic strength-elongation curve at a constant elongation using a base fabric or a fused interlining before being expanded.

For example, take the first strong elongation curve up to 100% elongation, remove the weight to return it to 0%, take the second strong elongation curve up to 100%, and remove the weight to return it to 0%. Return, and then the 8th 10
Taking the strength and elongation curve up to 0%, removing the weight and returning it to 0%, looking at the repeated strength and elongation times obtained in this way, it is found that from the 2nd and 8th repetitions, the modulus is almost the same and low. It was found that a strong elongation curve for the lath was obtained, and the texture was softer. However, the repeated strength/elongation curve of less than 20% changed approximately linearly and showed a reversible curve, and almost no change was observed in the hand. When the cyclic strength-elongation curve exceeds 180%, the structure of the fiber web is destroyed, resulting in loss of tension and elasticity.

In this way, the base fabric or fused interlining can be adjusted by 20 to 180% in the width direction.
, preferably by 50 to 15,096 degrees, to obtain an interlining that has a wide elasticity and waist that can be restored to its original width by weight removal, etc., and has an extremely soft texture.

Next, the present invention will be explained based on examples.

Example 1 A polyamide fiber web of 5 Vd was layered on a nylon tricot half fabric of a 15-room door, impregnated with an acrylic emulsion binder to a solid content of 1 g or more, dried, and heat treated.

Next, acrylic emulsion adhesive was applied from the fiber web side in a discontinuous pattern with a total solid content of 5 dabs, dried and heat treated to obtain a 26 f/W base fabric.

A heat-fusible polyamide resin was applied in dots on the fiber web side of this base fabric to obtain a fusible interlining. This fusion interlining had tension and elasticity, and had a soft feel with a tensile strength of 0.026 kg/5 art width at 10% elongation. This interlining is excellent as an interlining for thin outer fabrics, and can be washed for 90 minutes in a household washing machine or
Even in the test results after dry cleaning with chlorethylene solvent five times, no abnormality was observed in the condition of the interlining, which was good.

Example 2 The fused interlining in Example 1 was further expanded by 100% in the width direction, and then the weight was removed to restore it to approximately the original width.

This fused interlining has the same tension and stiffness as Example 1, and the strength when stretched by 10% is approximately 0 ) 415 c
nt width and an extremely soft texture.

This interlining was used as an interlining for a thin polyester outer material or a cotton outer material, and the same test results for washing and watering resistance and dry cleaning resistance as in Example 1 were good.

Example 3 After expanding the base fabric obtained in Example 1 by 100% in the width direction, the weight was removed to restore the width to approximately the original width, and then a heat-fusible polyamide-based material was applied to the fibrous web side of the base fabric. The resin was applied in dots at l 1 f/rd to obtain a fused interlining.

This fused interlining had tension and elasticity, and had a soft texture with a tensile strength of 0.005 kg75α at 10% elongation. The test results for washing resistance and dry cleaning resistance similar to those in Example 1 were good.

As described above, the present invention makes it possible to produce an interlining material that has tension and stiffness that cannot be obtained with conventional interlining materials, and has a soft texture.

Patent applicant Nippon Vilene Co., Ltd.

Claims (1)

[Claims] 1. 2. A step of stacking a fiber web and thoroughly impregnating it with a small amount of a binder and heat-treating it to form a composite; and applying an adhesive in a discontinuous pattern from the fiber web side and heat-treating it. 1. A method for producing a fused interlining comprising the steps of: preparing a base fabric; and applying a heat-fusible resin in the form of discontinuous dots on at least one side of the base fabric.